Finding the Third Proportional to 17,190 and 18,810

Step by Step Solution

1. Step 1: Write the proportion equation
   17,190 : 18,810 = 18,810 : x
2. Step 2: Convert to fraction form
   17,190/18,810 = 18,810/x
3. Step 3: Cross multiply
   17,190x = 18,810 × 18,810
4. Step 4: Simplify right side
   17,190x = 353,816,100
5. Step 5: Solve for x
   x = 353,816,100/17,190
6. Step 6: Final answer
   x = 20,582.67